# By what factor should the length of a simple pendulum be changed in order to triple the period of vibration?

##### 1 Answer

Jan 13, 2018

#### Answer:

9 times of the previous length

#### Explanation:

Relation between time period T and length l of pendulum is given as T

So, we can write,

Given, T2 = 3 T1

So,

Hence length should be made 9 times than that of the previous value.